JWT Token Decoder
Decode JWT tokens to inspect header, payload, and expiration without signature verification.
A JWT carries its header and its payload in plain, readable base64, not encrypted, which means the claims inside, an expiration time, a user id, a role, can be inspected directly without ever needing the secret key that actually signs and verifies it, useful during debugging even though it doesn't confirm the token itself is genuine or untampered. This tool decodes a JWT's header and payload for inspection, explicitly without verifying its signature, showing what's actually inside the token rather than confirming its authenticity.
See moreSee less about the JWT Token Decoder
Useful for checking exactly when a token actually expires while debugging a rejected API call, inspecting the claims inside a token received from a service you don't control and don't have the signing secret for, or reading a JWT's payload during development without needing signature verification at all.
Key features
- Clean interface
- Fast processing
- No signup required
- Works offline